CVE-2026-74420
- Source
- https://cve.org/CVERecord?id=CVE-2026-74420
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74420.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-74420
- Downstream
- Published
- 2026-08-15T05:59:24Z
- Modified
- 2026-08-18T03:31:19Z
- Summary
- drm/gpusvm: Reject VMAs with VM_IO or VM_PFNMAP when creating SVM ranges
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
drm/gpusvm: Reject VMAs with VM_IO or VM_PFNMAP when creating SVM ranges
VMAs marked with VM_IO or VM_PFNMAP are not backed by struct page objects, which GPUSVM requires in order to operate correctly. In particular, get_pages() relies on hmm_range_fault() to resolve struct pages for the target range.
Attempting to create an SVM range on such VMAs results in repeated get_pages() failures and can lead to an infinite loop inside a driver’s page‑fault handler. Prevent this by rejecting ranges on VM_IO or VM_PFNMAP VMAs and returning -EIO.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74420.json" }- References
-
- https://git.kernel.org/stable/c/353f26c74660bcbd8d82cd76622748e14a5a5db3
- https://git.kernel.org/stable/c/63f443384979563f16f70420f4fa85bba31238ca
- https://git.kernel.org/stable/c/b82a225e57a334335a21462b75ee2223bc6efe6d
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74420.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-74420
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git